Process for separating mud and fatty matters contained in water, more especially applicable to wool-scouring liquors



Aug. 4, 1925.

. R. BALSAN PROCESS FOR SEPARATING MUD AND FATTY MATTERS CONTAINED-INWATER,

MORE ESPECIALLY APPLICABLE TO WOOL SCOURING LIQUORS Filed May 23, 1922Fig.1.

Fig.2.

, f/vre/vror I 5 59/50 Yaw W4, al f ya? Patented Aug, 4, 1925.

urrso smr 113 1 ROBERT BALSA1\T,- or PARIS, FRANCE.

PROCESS FOR SEPARATING MUD AND FATTY MATTERS CONTAINED IN" WATER, MOREESPECIALLY APPLICABLE TO WOOL-SCOURING- IIIQUORS.

Application filed ma as, 192a. Serial no. 563,177.

that the mud or dirt obstructs the. orifices.

for the passage of liquid from the drums of the extractors, andnecessitate frequent cleaning, which prevents continuous working.

In order to obviate this disadvantage it has been attempted as apreliminary measure to separate the mud or dirt by decantation, so as toefiect the centrifugal extraction of the liquorsonly after clarifying,but this preliminary decantation is slow and insuflicient and it reducesconsiderably the yield of the process, because the mud in settling takeswith it the greater part of the particles of fat suspended in the water;

It is known to suddenly separate the mud from the liquors containing thefats, by centrifugal action for example in an extractor with solid drum;the particles of the mud, by reason of their density being greater thanthat of the fatty particles, separate rapidly from the waters in such away that the latter areobtained in a clarified state and containing thegreater part of the fats,

which can then be recovered by ordinarymethods. 7

According to the present invention, the scouring waters freed from mud,are returned into the wool-scouring troughs in orderto increase theirconcentration of fatt-y matter.

In order to carry out the process in accordance with this invention,there will be used a hydro-extractor or turbine with solid drum or tray,into which the water to be freed from dirt is delivered, and from whichthe clarified liquid can be discharged by any suitable suction device.

The drawing represents schematically by way of example an apparatus forcarrying out the process according to the invention.

heating coil 6 Fig. 1 is a view in lateral elevation of one form of theapparatus and Fig. 2 is a plan view of the ap The wool to be washed isIs battery of six vats a a while the wool scouring liquor containedtherein is led in a reverse direction. to these vats a a where by toaccomplish a washing of the wool .by the countercurrentprinciple, themost concentrated scouring liquor always being ,situated in the vat a Assoon as the mud commences to accumulate in vat a the muddy scouringliquor is drawn through perforated conduits b by the pump 6 and led bythe conduit 6 into a aratus.

From hereit passes into a separating cen' trifugal machine d having asolid pan which retains almost all of the mud. -The scouring'liquorfreed from mud is forced through conduit al under the action ofcentrifugal force due to the operation of the centrifugal machine 03,into the reservoir e, having a From this reservoir, the heated liquor,containing the greasy materials, is returned by the pump 7, by means ofconduit 9, into the washing vats where the concentration of grease maybe continued up to the point where-it is judged suficient for recoveryof thegrease, and separation may 'beefiected in any known manner. Abranch 9 connecting with the conduit 9 permits sending the concentratedliquor relieved of its mud, into thecentrifugal ma chine h where thegreasy materials may be extracted; a valve or the like g placed in theconduit gbeyond the branch g permits shutting ofi this conduit gwhen thegreasy through a materials are to be removed from the centrifugalmachine h. i

This process presents, in addition to the advantage that it can bearranged to operate continuously, the following further advantages:

(a) considerable increase in the yield of. fat by reason of the factthat the mud, separated suddenlyfrom the water, takes with it little orno fat, whereas with the known processes of separation, a largeproportion 105,

of the fat was taken;

(b) easier recovery of the fats from the liquors because the latter arevery clear and I no longer contain mud likely to obstruct thefat-discharge passages; y r (c) improvement in the. quality of the Elli)7O reservoir 0 where it is heated by a coil v0 7 fats because the latterbeing suddenly separated from the Waters, do not suffer fromfermentation, which may occur rapidly and pollute the emulsified fats;

possible re-utilization of the Washing.

liquors, after they have been freed from the It will be understood thatthe invention is applicable not only to wool-scouring liquors 10 butalso to all liquids charged with mud' or liquors, comprising suddenlyseparating the mudfrom the liquors charged with fat, reusing theclarified liquors for W001 scouring at least once, to increase theconcentration of fatty matters, again separating out the mud, and thentreating the said liquor to recover the fats therefrom. s

In testimony whereof I have signed my name to this specification.

ROBERT BALSAN Witnesses:

J. ARMEHGAUD, AIME, U. DEFEXRIMOND.

